public void setShutdownOptions(GpioPinShutdown options, GpioPin... pin) {
for (GpioPin p : pin) {
if (!pins.contains(p)) {
throw new GpioPinNotProvisionedException(p.getPin());
}
p.setShutdownOptions(options);
}
}
public void setShutdownOptions(Boolean unexport, PinState state, GpioPin... pin) {
for (GpioPin p : pin) {
if (!pins.contains(p)) {
throw new GpioPinNotProvisionedException(p.getPin());
}
p.setShutdownOptions(unexport, state);
}
}
private void unprovision(Pin pin) {
for (GpioPin e : gpioContoller.getProvisionedPins()) {
if (e.getPin().equals(pin)) {
gpioContoller.unprovisionPin(e);
break;
}
}
}
@Override
public void unexportAll() {
// un-export all GPIO pins that are currently exported
for (GpioPin pin : pins) {
if (pin.isExported()) {
pin.unexport();
}
}
}
@Override
public PinPullResistance getPullResistance(GpioPin pin) {
// ensure the requested pin has been provisioned
if (!pins.contains(pin)) {
throw new GpioPinNotProvisionedException(pin.getPin());
}
// get pin pull resistance
return pin.getPullResistance();
}
@Override
public PinMode getMode(GpioPin pin) {
// ensure the requested pin has been provisioned
if (!pins.contains(pin)) {
throw new GpioPinNotProvisionedException(pin.getPin());
}
// return pin edge setting
return pin.getMode();
}
@Override
public boolean isMode(PinMode mode, GpioPin... pin) {
if (pin == null || pin.length == 0) {
throw new IllegalArgumentException("Missing pin argument.");
}
for (GpioPin p : pin) {
if (!p.isMode(mode)) {
return false;
}
}
return true;
}
@Override
public void export(PinMode mode, GpioPin... pin) {
if (pin == null || pin.length == 0) {
throw new IllegalArgumentException("Missing pin argument.");
}
for (GpioPin p : pin) {
// ensure the requested pin has been provisioned
if (!pins.contains(p)) {
throw new GpioPinNotProvisionedException(p.getPin());
}
// export the pin
p.export(mode);
}
}
@Override
public void setPullResistance(PinPullResistance resistance, GpioPin... pin) {
if (pin == null || pin.length == 0) {
throw new IllegalArgumentException("Missing pin argument.");
}
for (GpioPin p : pin) {
// ensure the requested pin has been provisioned
if (!pins.contains(p)) {
throw new GpioPinNotProvisionedException(p.getPin());
}
// set pin pull resistance
p.setPullResistance(resistance);
}
}
/**
* @param pin
* @return
* <p>A value of 'true' is returned if the requested pin is exported.
*/
@Override
public boolean isExported(GpioPin... pin) {
if (pin == null || pin.length == 0) {
throw new IllegalArgumentException("Missing pin argument.");
}
for (GpioPin p : pin) {
// ensure the requested pin has been provisioned
if (!pins.contains(pin)) {
throw new GpioPinNotProvisionedException(p.getPin());
}
if (!p.isExported()) {
return false;
}
}
// return the pin exported state
return true;
}
@Override
public GpioPin provisionPin(GpioProvider provider, Pin pin, String name, PinMode mode) {
// if an existing pin has been previously created, then throw an error
for (GpioPin p : pins) {
if (p.getProvider().equals(provider) && p.getPin().equals(pin)) {
throw new GpioPinExistsException(pin);
}
}
// create new GPIO pin instance
GpioPin gpioPin = new GpioPinImpl(this, provider, pin);
// set the gpio pin name
if (name != null) {
gpioPin.setName(name);
}
// export this pin
gpioPin.export(mode);
// add this new pin instance to the managed collection
pins.add(gpioPin);
// return new new pin instance
return gpioPin;
}
@Override
public void unprovisionPin(GpioPin... pin) {
if (pin == null || pin.length == 0) {
throw new IllegalArgumentException("Missing pin argument.");
}
for (int index = (pin.length - 1); index >= 0; index--) {
GpioPin p = pin[index];
// ensure the requested pin has been provisioned
if (!pins.contains(p)) {
throw new GpioPinNotProvisionedException(p.getPin());
}
// remove all listeners and triggers
if (p instanceof GpioPinInput) {
((GpioPinInput) p).removeAllListeners();
((GpioPinInput) p).removeAllTriggers();
}
// remove this pin instance from the managed collection
pins.remove(p);
}
}
/**
* This method can be called to forcefully shutdown all GPIO controller monitoring, listening, and
* task threads/executors.
*/
@Override
public synchronized void shutdown() {
// prevent reentrant invocation
if (isShutdown()) return;
// shutdown all executor services
//
// NOTE: we are not permitted to access the shutdown() method of the individual
// executor services, we must perform the shutdown with the factory
GpioFactory.getExecutorServiceFactory().shutdown();
// shutdown explicit configured GPIO pins
for (GpioPin pin : pins) {
// perform a shutdown on the GPIO provider for this pin
if (!pin.getProvider().isShutdown()) {
pin.getProvider().shutdown();
}
// perform the shutdown options if configured for the pin
GpioPinShutdown shutdownOptions = pin.getShutdownOptions();
if (shutdownOptions != null) {
// get shutdown option configuration
PinState state = shutdownOptions.getState();
PinMode mode = shutdownOptions.getMode();
PinPullResistance resistance = shutdownOptions.getPullResistor();
Boolean unexport = shutdownOptions.getUnexport();
// perform shutdown actions
if ((state != null) && (pin instanceof GpioPinDigitalOutput)) {
((GpioPinDigitalOutput) pin).setState(state);
}
if (resistance != null) {
pin.setPullResistance(resistance);
}
if (mode != null) {
pin.setMode(mode);
}
if (unexport != null && unexport == Boolean.TRUE) {
pin.unexport();
}
}
}
// set is shutdown tracking variable
isshutdown = true;
}
private void output(Exchange exchange, Object value) {
//
PinMode mode = pin.getMode();
log.debug("Mode > " + mode + " for " + pin);
// Check mode
switch (mode) {
case DIGITAL_OUTPUT:
Boolean outputBoolean =
exchange.getContext().getTypeConverter().convertTo(Boolean.class, value);
((GpioPinDigitalOutput) pin).setState(outputBoolean);
break;
case ANALOG_OUTPUT:
Double outputDouble =
exchange.getContext().getTypeConverter().convertTo(Double.class, value);
((GpioPinAnalogOutput) pin).setValue(outputDouble);
break;
case PWM_OUTPUT:
Integer outputInt =
exchange.getContext().getTypeConverter().convertTo(Integer.class, value);
((GpioPinPwmOutput) pin).setPwm(outputInt);
break;
case ANALOG_INPUT:
case DIGITAL_INPUT:
log.error("Cannot output with INPUT PinMode");
break;
default:
log.error("Any PinMode found");
break;
}
}
@Override
public void invoke(GpioPin pin, PinState state) {
if (targetPin != null) {
targetPin.setState(targetPinState);
}
}
/** Process the message */
@Override
public void process(Exchange exchange) throws Exception {
if (log.isTraceEnabled()) {
log.trace(exchange.toString());
}
GPIOAction messageAction =
exchange.getIn().getHeader(Pi4jConstants.CAMEL_RBPI_PIN_ACTION, action, GPIOAction.class);
if (messageAction == null) {
log.trace("No action pick up body");
this.output(exchange, exchange.getIn().getBody());
} else {
log.trace("action= {} ", action);
switch (messageAction) {
case TOGGLE:
if (pin.getMode() == PinMode.DIGITAL_OUTPUT) {
((GpioPinDigitalOutput) pin).toggle();
}
break;
case LOW:
if (pin.getMode() == PinMode.DIGITAL_OUTPUT) {
((GpioPinDigitalOutput) pin).low();
}
break;
case HIGH:
if (pin.getMode() == PinMode.DIGITAL_OUTPUT) {
((GpioPinDigitalOutput) pin).high();
}
break;
case BLINK:
if (pin.getMode() == PinMode.DIGITAL_OUTPUT) {
pool.submit(
new Runnable() {
@Override
public void run() {
try {
Thread.sleep(getEndpoint().getDelay());
((GpioPinDigitalOutput) pin).toggle();
Thread.sleep(getEndpoint().getDuration());
((GpioPinDigitalOutput) pin).toggle();
} catch (InterruptedException e) {
log.error("Thread interruption into BLINK sequence", e);
}
}
});
}
break;
default:
log.error("Any action set found");
break;
}
}
}